Secondary Decay Option

Add the runner option to decay final states within GiBUU using PYTHIA.

km3buu/cmd.py

@@ -117,6 +117,13 @@ ARGPARSE_GENERAL_PARAMS = [{
     "action": argparse.BooleanOptionalAction,
     "help": "Do tau propagation",
     "default": False
+}, {
+    "option_strings": ["--decay"],
+    "dest": "decay",
+    "action": argparse.BooleanOptionalAction,
+    "help":
+    "Decay final state particles (according to the decays done in gSeaGen)",
+    "default": True
 }, {
     "option_strings": ["--zenith", "-z"],
     "dest": "zenith",
@@ -201,7 +208,7 @@ def main():
                                    args.target,
                                    seed=args.seed,
                                    fluxfile=fluxfile,
-                                   do_decay=False)
+                                   do_decay=args.decay)
 
     jc["neutrinoanalysis"]["outputEvents"] = True
     jc["neutrinoanalysis"]["inclusiveAnalysis"] = False